Table of Contents
Advertisement
Measurement method: all measurement methods associated to an individual
measurement.
Nominal voltage: voltage by which a network is named or identified.
Order of a harmonic: ratio of the frequency of the harmonic to the fundamental
frequency; a whole number.
Passband: range of frequencies in which the response of a device exceeds some
specified minimum.
Peak: maximum (+) or minimum (-) peak value of the signal.
Peak factor: relation between the peak value and efficient value of the current.
Phase: temporal relationship between current and voltage in alternating current
circuits.
Phase and route: a measurement route corresponds to a difference in potential
between two conductors. A phase is a simple conductor. In polyphased systems, a
measurement route can be between two phases or a phase and neutral or a phase
and earth or neutral and earth.
Phase displacement factor: relationship between the active power and apparent
power of the fundamental component.
Power displacement factor: expresses the difference between the apparent and
active power when and only when the relationship of the voltage phase and current
to the fundamental is taken into account.
Power factor: relationship between active and apparent power.
PST: (Short term perception). Calculation of flicker over a ten minute cycle.
PLT: (Long term perception). Calculation of flicker over a two-hour cycle.
RMS: Root Mean Square. Efficient value of a current or voltage.
Temporary surge at industrial frequency: temporary increase in the voltage
amplitude at a point in the electrical power network above a given threshold.
THD: Total Harmonic Distortion. The rate of total harmonic distortion gives the
influence of harmonic components in a signal.
Voltage dip: temporary reduction in the voltage amplitude at a point in the electri-
cal power network below a given threshold.
UNB: Voltage unbalance in a polyphased electric power network; state in which
the RMS voltages between conductors and/or the phase differences between suc-
cessive conductors are not all equal.
PowerMeterStore
1.877.766.5412
www.
.ca
Shop for AEMC products online at:
Watt: unit of measurement for power (W symbol).
127
Power Quality Analyzer Model 8335
Advertisement
Table of Contents
